5

Yes:
Depends on the nerve root involved. S-1 root causes pain in the posterior thigh, calf ; into the foot. If the pressure on the nerve is severe, there will b numbness ; muscle weakness noticed in the push off in ur gait. Meaning hard 2 rise up on ur toes.
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6

Absolutely:
Podiatrists hate flip flops for that very reason. Stop wearing them, wear athletic shoes (cross trainers, etc) for a while and see if that improves your pain. If not, see a doctor.
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8

Sounds like a nerve:
Issue, ie, spine lesion in the lower back. The areas you have problems with are from L1 level down to l5-s1. So get checked by pcp and possible referral to a spine doc /orthopod. You probably have arthritis (spondylitis) with some disc lesions.
Avoid bending, lifting heavy weight, including grand kids. Do regular exercises within limits of discomfort.
Losing wt + nsaids 4 pain, a ms relaxer also.
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12

Problems linked?:
Heaviness of the leg and hip weakness may be due to a back problem (L 3-4). This would not cause pain in the ankle (local process if there truly is some swelling) I would have the muscle CPK checked (on statin drug) the weakness in the legs is typically symmetrical if due to statin drugs but can be noticed on one side initially. If these problems persist you will need to be examined.
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13

Maybe Orthotics.:
It sounds like you may have a biomechanical instability in your feet that is passing problems "up the kinetic chain." custom made prescription orthotics, made by a certified lab, under the recommendations of a podiatrist can help tremendously!
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14

Not??:
Cramps are a conundrum. Proposed causes are all neurologic including spinal stenosis, hyperventilation and GOK-God Only Knows. We do not know the causes. Eecent article suggested that confusing your nervous system by eating very picky food may help. Breathing in a paper bag may also help. Docs do not know everything. . .yet or ever. Oh yes, overuse can also be trigger so the heels might do it.
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15

Devil in details.:
Not quite enough information to help a whole lot. The pain could be due a nerve problem in the foot. The increased pressure with standing might be affecting a nerve. The exact location and type of pain are essential to solving the problem. The back could also be involved. To remove all doubt, seek an evaluation by a neurologist, orthopedic surgeon or a podiatrist. Maybe even all three.
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19

Overuse of:
Most definitely, especially if you have begun to compensate for the heel pain by not putting weight on the heel properly. The lifting of the heel to keep it of the ground is causing the calf to fatigue and start cramping. You need to consult a specialist about treating the fasciitis.
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20

Problem is higher up:
If it keeps happening, you may be compressing a disc or part of nerve coming out if it to give you these symptoms. Proper diagnosis with imaging would be helpful to get remedial help like physical Thierry etc. Feel better
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